Fireproof floor.



No. 692,309. Patented Feb. 4, |902.

G. KNCHE.

FIREPROOF FLOOR.

4 (Application med June e, 1901.) (No Model.) 3 SheetsSheet l.

/ Arron/vers TN: Nonms PETERS co, Pnofarumo., wAsmNnTon, D c

N0. 692,309. I Patented Fab. 4, |902.

G. KNOCHE.

'FIBEPRODF FLOOR.

(Application led June 6, 1901.)

(N0 Model.)

3 Sheets-Sheet 2.

www L A TTOHWE Y S TH: Noam Firms co. mom-uma.. wAsHlNmoN, n. n:

No, 692,309. VPatented Feb. 4, |902.

G. KNocHE.

FmEPnooF FLooRQ (Application tiled June 6, 1901.).

(No Model.) 3 Sheets-Shui 3.

F' :Z /2 Lg .P .Y L @z 1 1, f f f F l- I N VEN 70H 2 g@ 7pm By A TTOHNE Y S UNTTED STATES PATENT OFFICE.

GOTTFRIED KNOOHF., OF NEW YORK, N. Y.

FIREPROOF FLOOR.

SPECIFIGATON forming part of Letters Patent No. 692,309, dated February 4, 1902. Application filed .Tune 6, 1901. Serial No. 63,400. (No model.)

sides on girders between the supporting-ooh.

umns and in which the floor-body of concrete is supported partly or entirely on intercrossing rods that are suspended from the girder-s on an iron frame fastened to the ends of the brackets supported and connected to the girders supported ou the columns, so that a light yet strong iioor construction is obtained, in which the ironwork is calculated and dimensioned to carry the entire weight of the floor and its superimposed load, the concrete acting only for fireproofing the ironwork and filling in, thereby giving additional safety and strength.

The invention consists of a reproof floor comprising girders resting on columns, brackets extending transversely from said girders, a frame connecting the inner ends of said brackets, and tie-rods suspended from said brackets and frame and intercrossing with each other for supportingl the weight of the floor and load.

The invention consists, further, of certain details of construction and combinations of parts, which will be fully described hereinafter and finally pointed out in the claims.

In the accompanying drawings, Figure l represents a plan View of my improved fireproof floor. Fig. 2 is a vertical longitudinal section through one of the girders of the same. Fig. 3 is a vertical longitudinal sectionthrough the center of the iioor on line 3 3, Fig. l. Fig. 4 is a vertical transverse section through the girder, showing a modified construction as applied to an I-beam. Fig. 5 is a plan view of one of the supporting-columns and girders supported thereon, drawn on a larger scale. Fig. 6 is a side elevation of Fig. 5, and Figs. 7 and S are a plan view and a vertical section of a modified construction of my improved iireprooof iioor.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A A represent the supporting-columns of the floor. The columns A are provided with two sets of bracket-shaped projections da', on which the lower channel-iron and the upper suspensionrods of the girder are supported, the lower rods CZ of the girder D extending straight between the lower brackets a, while the upper arc-shaped rods d' extend between the upper brackets cr, as clearly shown in Fig. 2. The channel-iron CZ and suspension -rods d are connected by tie-rods d2. Each girder D is formed of a channel-iron and two suspensionrods, the latter arranged parallel with each other, as shown in plan View in Figs. 1 and 5. On the two suspension rods of each girder are supported transverse brackets C, which extend equidistantly at both sides of the girder, said brackets being formed of wroughtiron bars bent into [iat V shape, with vertical portions at the ends, said vertical portions being connected by horizontal tie-rods e. The upper ends of the brackets carry a square frame e2, of flat iron, which forms the support for the curved suspended tie-rods e, these intercrossing rods forming the support of the concrete body of the floor, as shown in Fig. 3. The girder,with the brackets, is likewise filled up with concrete, so as to form one solid structure, from which the brackets extend at both sides. The concrete filling of the girder, which may be strengthened by embedding wire-netting in the concrete, holds the brackets firmly in position, so as to reduce the span between the girders and form arigid support for the section of the iioor which is supported by the iron frame and the intercrossng rods onand between the brackets.

In place of the girder formed by suspended rods suspended L-beams or I-beams may be used, in which case the bracketsfare bolted to the lower part of the web of the beam F, as shown in Fig. 4, the suspended rods e being attached to the upper ends of these brackets, which are tied together by the tie-rods e' in the manner before described. The filling of the girder with concrete is readily accomplished and also the filling of the floor-body by means of a false frame arranged below the girder and floor and filling the outlines and imparting the contour ofthe same, as shown in Fig. 3. The concrete filling for the brack- IOO ets may be provided with suitable metallic molding, if desired, so that an ornamental appearance is imparted tothe iioor.

The system of intercross'ing tie-rods can be considerably simplified by dropping the cen tral tie-rod to a greater depth than the inter crossing tie-rod next adjacent. In this case the tie-rods form, with the body of concrete surrounding them, rigid cross-ribs or panels between the ribs, as shown in Fig. 8.

The construction described forms a very strong and substantial iireproof floor, in which all the tension is wholly within the iron rods, reducing the concrete filling to a minimum thickness, owing to the intercrossing suspension-rods connected with the ends of the brackets, the floor being supported on all four sides. Each door-section between four columns forms an independent structure that is rmly connected with the brackets and girders, so that when the concrete tilling is placed over the suspended rods, brackets, and girders a strong and fireproof floor is obtained without any strain or tension in the concrete.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A fireproof floor, consisting of girders supported on columns, brackets extending transversely from said girders, an iron frame connecting the ends of said brackets, arcshaped tie-rods suspended from the opposite sides of said frame and intercrossing with each other, and a concrete body embedding said girders, brackets and suspended tie-rods, substantially as set forth.

2. A ireproof floor, consisting of supporting-columns, girders connecting said columns, brackets extending transversely from said girdersan iron frame connecting the ends of said brackets, intercrossing tie-rods suspended from opposite sides of said frame, and a body of concrete in which said girders, brackets and tie-rods are embedded, substantially as set forth.

3. A fireproof floor, consisting of girders, each formed of a pair of arc-shaped tie-rods, resting on projections of the supporting-columns, and a channel-bar below said tie-rods also supported on projections of the columns, brackets extending transversely from said girders, an iron frame connecting the inner ends of said brackets, intercrossing tie-rods connecting theopposite sides of said frame, and a concrete body surrounding the girders, brackets and tie-rods, substantially as set forth.

4. A Iireproof iioor, consisting of girders resting on supporting-columns, brackets eX- tending transversely from said girders, intercrossing tie-rods connecting said brackets, the inner tie-rods being suspended at greater depth than the outer ones, and a concrete body inclosing said tie-rods and forming ribs and intermediate panels, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

GOTTFRIED KNOCHE.

Witnesses:

PAUL GOEPEL, GEORGE GEIBEL. 

